Afamily purchased tickets for a concert. they paid a total of $90.00 for 7 adults tickets and 12 child tickets. the price of a child ticket 2/3 the price of an adult ticket. how much is the price of one adult ticket.

The equation is like this 12x + (2/3)7x =90
Simplify
12x+(14/3x)=90
(50/3)x= 90
x= 90/(50/3)
x= 5.4

Ais the answer to your ques

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!